Multiple injuries including a serious back injury sustained against the Titans in August last year meant Campbell-Gillard missed the Panthers' charge into the finals, but the forward is adamant his days on the sidelines are over.

"I had a few injuries last year which was a bit upsetting," he said.

"But they say things happen in threes and I had three last year so hopefully no more this year."

The 23-year-old has not looked back and continues to catch the eye of representative selectors with his strong build and athletic skills for a prop forward, after playing two games for City Origin since making his debut in 2015, and more recently the All Stars clash in February.

"I'm pretty happy with where I'm sitting at the moment on their radar, which is a nice eye opener for me," Campbell-Gillard said.

"It (All Stars game) was a very good experience, just learning things off Mal Meninga and seeing what he was like as a coach was excellent.

"Whatever comes up comes up. I just want to focus on building as a player and as a teammate for the Panthers and try to build a good season."

Despite heading to the season opener against St George Illawarra as strong favourites, the Panthers are not taking their Round 1 clash lightly, with Campbell-Gillard pointing out that trial form means nothing and that his side need to be switched on immediately.